I am making a program for the interviewers to submit their marks for a particular candidate. The interviews are on 5.7.18 and I have to submit the program before Tuesday/Wednesday. I am unable to connect to the MySQL database. I think there is some problem in user creation. The marks entered from 5 different PCs should go to a MySQL database in a different PC
Here is my url/password/username -
private static final String URL = "jdbc:mysql://192.168.1.35:3306/interview";
private static final String USER = "root";
private static final String PASSWORD = "ubuntu";
Here is my JAVA code -
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection con = DriverManager.getConnection(URL, USER, PASSWORD);
JOptionPane.showMessageDialog(null,"Connection Established!","Alert", JOptionPane.INFORMATION_MESSAGE);
String q1="select username from users";
Statement st = con.createStatement();
String usr=jTextField2.getText();
String psw=(new String(jPasswordField1.getPassword()));
ResultSet rs = st.executeQuery(q1);
boolean flag_usr=false;
while(rs.next())
{
if(usr.equals(rs.getString("username")))
{
flag_usr=true;
}
}
if(flag_usr==true)
{
String q2="select password from users";
ResultSet rs1 = st.executeQuery(q2);
boolean flag_psw=false;
while(rs1.next())
{
if(psw.equals(rs1.getString("password")))
{
this.dispose();
JOptionPane.showMessageDialog(null,"Login successful!","Alert", JOptionPane.INFORMATION_MESSAGE);
new Marks().setVisible(true);
}
}
}
}
catch(Exception e)
{
e.printStackTrace();
}
And I am getting this error on clicking login button in whose function the above code is written -
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at interview.portal.Login.jButton1ActionPerformed(Login.java:178)
at interview.portal.Login.access$000(Login.java:21)
at interview.portal.Login$1.actionPerformed(Login.java:81)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
BUILD SUCCESSFUL (total time: 5 seconds)
